Centrifugal machine



(No Model.) l

- S. A. BAKER 8u M. I'. COLBY.

GENTRIFUGAL MACHINE.

No. @03,395I4 Patented May 3, 1898. El.

'a/W/ /y WTNESEES:

W .M P

y UNITED STATESPATENT OFFICE,

SAMUEL A. BAKER AND MELVIN F. COLBY OF SPRINGFIELD, VERMONT.

CENTRIFUGAL MACHINE.

SPECIFICATION forming part of Letters Patent No. 603,395, dated May 3,1898. Application iiled March 3l, 1897. Serial No. 630,101. (No model.)

To all whom it may concern: Be it known that we, SAMUEL A. BnKER andMELvIN F. CoLBY,of Springeld, in the county of Windsor and State lofVermont, have invented certain new and useful Improvements inCentrifugal Separators, of which the following is a specification.

p This invention relates to a centrifugal oilseparator; and it consistsof an improved machine which is particularly adapted for separatingmachine-oil from the solid particles of metal or other substances withwhich it may have become mixed in machining operations. A large quantityof oil is used in various machine-shop operations-such as drilling,tapping, dac-and since this oil is valuable it becomes desirable torecover it from the metal particles and shavings or dirt which resultfrom lthe said operations. This result is accomplished in a highlysatisfactory manner by means of the improved apparatus which we will nowproceed to describe and claim.

Of the accompanying drawings, forming a part of this specification,Figure 1 represents a plan view of `a centrifugal separator constructedaccording to our invention. Fig. 2 represents a median vertical sectionof the same on the line 2 2 of Fig. 1. Fig. 3 shows a modifiedconstruction of certain parts. Fig. 4 shows another modied'constructionof the same parts. The same letters and numerals of reference indicatethe same parts in all the figures.

Referring to the drawings, a designates a base on which is formed ormounted a hollow casing b, which contains the revolving parts. Thecasing b comprises a lower portion 2 and an upper or wider portion 3,bolted to the portion 2 and having a central aperture b com.- municatingtherewith.

c designates a receptacle or pan occupying the upper portion of thecasing and mounted on a vertical shaft d, which has a bearing in ahollow pedestal e at the bottom of the casing b, the shaft being steppedat c in said pedestal. The pan is rotated by means of a belt whichpasses around two idlers ff and a pulley g, fixed to the shaft cl. Thesaid pan has a cover c', which closes against the rim of the pan andwhose under surface forms therewith a contracted outlet ca for liquid,the said cover being provided with a nut c2, by means of which it isclamped against a central shoulder or sleeve c4, formed on the pan. ingrim or body h, ofqfelt or other brous material, is provided outside ofthe outlet c8 and is held in place by means of a clamping-ring h', whichis attached by screw-bolts h2 to the projecting rim or iiange of thecover c. In operation the pan c, having been filled or partially filledwith the mixture of oil and metal particles or dirt and the coverclamped on, is then rotated at a higher rate of speed. The centrifugalforce acting on the rapidlyrevolving contents of the pan forces the oilthrough the narrow crevice c3, the larger solid particles being left inthe pan. The liquid which has escaped through the crevice c3 is forcedagainst the fibrous filter h and passes through the same into the upper'portion 3 of the casing b, collecting in an annular trough b?, forlnedin the bottom of said portion, and running out through an outlet b3 intoa suitable receptacle. The iibrous filter h retains lthe finer particlesof metal or dirt which may have passed through the crevice c3, and theoil is collected in the trough b2 in a pure and clean condition.

Fig. 3 shows a modification in which the vfibrous filter h is containedbetween flanges ving the lower portion of the pedestal where Radialsprings lo,

it bears on said socket. connecting the pedestal with the sides of thecasing b, serve to keep said pedestal in a yieldingly upright position.The portion 3 of the casing is openvat the top to allow of the removalof the pan c or its cover. m represents a brake having contactstrips ofleather and being pivoted at m between ears formed on the casing b. Thebrake projects over the pan c and is adapted to be pressed against thecover to arrest the pan when such action becomes desirable.

The details of construction may be varied A filter-4 IOO withoutdeparting from the spirit of our invention, such as making several shortopenings or erevices c3 between the cover-surface and the pan-surfaceinstead of a continuous circular opening and placing ibrous iilter 7L infront of each crevice.

It is obvious that our invention may be utilized for other purposes thanfiltering oil, its construction rendering it applicable to many mixturesof solids and liquids where it is desired to recover either the solidsor the liqnids.

The fibrous filter 7L may be placed close to the edge of the pan c, asshown in Fig. 2, or a slight distance removed therefrom, as in Fig. 4.

Ve claim l. Acentrifugalseparatoreoniprisingapan rotatable on a verticalaxis and havingacoiitracted outlet located between surfaces which areformed to arrest relatively coarse fragments or particles, and anexternal fibrous filter adapted to arrest the relatively line particlesthat escape through said outlet with the centrifugally-expelled liquidand to permit the outward passage of said liquid, said fibrous filterheilig clamped between opposing annular supports adjacent tol saidcontracted outlet.

2. A centrifugal separator comprising a pan rotatable on a vert-icalaxis and having a contraeted outlet located between surfaces which areformed to arrest relatively coarse fragments or particles, externalclamping inembers at opposite sides of said outlet, one of which membersis formed by a projecting rim or fiange of the cover of the pan and afibrous lter held by said clamping members in the path of liquidexpelled eentrifugally through said outlet, said filter being adapted toarrest the relatively fine particles that escape through the outlet, andto permit the outward movement of said liquid.

3. A centrifugal separator comprising a pan and cover rotatable on avertical axis and having a contracted outlet located between surfaceswhich are formed to arrest relatively coarse fragments or particles, oneof said surfaces being the inner side of the cover resting on the marginof the pan, said cover being extended outwardly as a clamping inemberbeyond the margin of the pan, a complemental clamping member or ringdetaehably connected with the cover, and a fibrous filter interposedbetween said clamping members.

In testimony whereof we have signed our names to this speciication, inthe presence of two subscribing witnesses, this 24th day of March, A. D.1897.

SAMUEL A. BAKER. MELVIN F. COLBY. Vitnesses:

FRED C. Davis, WALTER M. Wiii'rii.

